Failed MOT :(
My 145 1.6ts failed it's mot on friday, so spent the weekend tinkering, basically failed on emissions, so swapped the lambda yesterday with a view to solving this, seems to have done some good, running a lot smoother, however has thrown up 2 new problems instead! She is now ticking over at about 1500 rpm, and when going to pull off engine is spluttering and backfiring, however fine up the rev range..?! Have tried cleaning that little valve on the rocker cover breather, and it's a 3 week old MAF, so pretty sure it's not down to that..... any suggestions would be greatly appreciated as i'm currently at a loss to explain it. Gonna see if i can get it booked into my local specialist for a diagnostic session, but by the sounds of things there may be a bit of a wait to get it in, so anything i could try in the mean time would be good.